Linear Transformations
نویسنده
چکیده
The n×m matrix AT obtained by exchanging rows and columns of A is called the transpose of A. A matrix A is said to be symmetric if A = AT . The sum of two matrices of equal size is the matrix of the entry-by-entry sums, and the scalar product of a real number a and an m× n matrix A is the m× n matrix of all the entries of A, each multiplied by a. The difference of two matrices of equal size A and B is A−B = A+ (−1)B . The product of an m× p matrix A and a p× n matrix B is an m× n matrix C with entries
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